Schrag, S. J., McGee, L., Whitney, C. G., Beall, B., Craig, A. S., Choate, M. E., . . . Klugman, K. P. (2004). Emergence of Streptococcus pneumoniae with Very-High-Level Resistance to Penicillin. American Society for Microbiology.

Schrag, Stephanie J., Lesley McGee, Cynthia G. Whitney, Bernard Beall, Allen S. Craig, Miriam E. Choate, James H. Jorgensen, Richard R. Facklam, e Keith P. Klugman. Emergence of Streptococcus Pneumoniae With Very-High-Level Resistance to Penicillin. American Society for Microbiology, 2004.

Schrag, Stephanie J., et al. Emergence of Streptococcus Pneumoniae With Very-High-Level Resistance to Penicillin. American Society for Microbiology, 2004.